It usually takes longer time for first time filer to get the refund. sometimes as long as six months. if you want to check the current status of your return, you can call 1-800-959-8281 speaking to a rep.
my classmates with the same situation as yours have already got the tax already, I think there may be some problem with your tax return, at least you should get some phone call from the government, asking for some information about you, such as when did you enter Canada, etc.
